In general, a person should try to stay "euvolemic" - not too much fluid on board and not too little - dehydration.. But even a fairly dehydrated person is more likely to have cardiac issues from blood electrolyte issues and not from hypovolemia.

In general, a person should try to stay "euvolemic" - not too much fluid on board and not too little - dehydration.. But even a fairly dehydrated person is more likely to have cardiac issues from blood electrolyte issues and not from hypovolemia.
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